Dubhe-A20 – RLG INS Inertial Integrated Navigation System | Vibration-Resistant Aerospace INS for Drones
The Dubhe-A20 is a high-performance airborne optical inertial navigation system (INS) designed for modern UAVs and airborne platforms. It integrates FOG/RLG gyroscopes and quartz accelerometers in an optimized strapdown architecture. The system’s fusion engine combines GNSS, celestial, and other navigation data while maintaining pure inertial navigation capability, delivering accurate and reliable positioning and attitude information.
Applications
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UAVs and drones
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Modern airborne platforms
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Aerospace navigation systems
Key Features
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Vibration-resistant alignment for stable navigation in dynamic environments
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Flexible alignment options to support various mission profiles
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Expandable sensor integration for additional navigation sources
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Built-in system diagnostics for reliable operation and maintenance
| Series | Aerospace Inertial Navigation System(INS-A) | ||
| Type | Dubhe-A20 | ||
| Accelerometer | Months Bias Repeatability(1σ) | ≤10μg | |
| Months Scale Factor Accuracy(1σ) | ≤10ppm | ||
| Gyro | Bias Repeatability(1σ) | ≤0.008°/hr | |
| Scale Factor Accuracy(1σ) | ≤10ppm | ||
| Random walk(1σ) | ≤0.003°/√hr | ||
| Features | Position Accuracy | Pure inertia | ≤1nm/20h,CEP |
| INS/GNSS combination | better than GNSS | ||
| Speed Accuracy | Pure inertia | ≤1.0 m/s,RMS | |
| INS/GNSS combination | ≤0.2m/s,RMS | ||
| Angular Rate | ≥±400°/sec | ||
| Angular Acceleration | 100000°/sec2 | ||
| Acceleration | ＞25g | ||
| Angular Attitude | Any Orientation | ||
| Alignment time | ≤30min | ||
| Input/output | 3 RS422 full-duplex serial ports, 1 100M Ethernet port | ||
| Alignment time | Time | ＜30min | |
| AHRS Applications Performance | Heading Accuracy | Pure inertia | ≤0.02°sec(L),RMS |
| INS/GNSS combination | ≤0.01°,RMS | ||
| Pitch & Roll Accuracy | Pure inertia | ≤0.015°,RMS | |
| INS/GNSS combination | ≤0.01°,RMS | ||
| Characteristics | Power consumption | ＜40W | |
| Dimensions | 232×186×160 | ||
| Weight | ＜8.2kg | ||
| Temperature | -40℃~60℃ | ||
| Shock | 15g,Half-sine wave 11ms | ||
| Input Voltage | DC24V(±25%) | ||
| cooling | Conduction to mounting plate | ||
| Vibration | 20~2000Hz,6.06g | ||
| MTBF | ＞10000 hours | ||
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